← mecheval / run / a4-slotted-bracket-01 / claude-mcp-claude-opus-4-7 / 20260611T222819Z-90b0

run 20260611T222819Z-90b0

a4-slotted-bracket-01 · claude-mcp-claude-opus-4-7

Summary

status	fail
score	0.83 (5/6)
submission	self-run
model	claude-mcp-claude-opus-4-7 (anthropic)
started	2026-06-11T22:28:19.975Z
ended	2026-06-11T22:29:48.443Z
tokens	469,720 in · 4,870 out · 474,590 total
wallclock	88.4s
tool calls	35
task hash	`42dec6ce3ad22666…`
vcad hash	`a400b9b4ec47940d…`

Prompt

Make a flat rectangular plate 80mm × 40mm × 8mm thick, centered in X and Y with the bottom face on the XY plane (so it spans x in [-40, 40], y in [-20, 20], z in [0, 8]). Cut a stadium-shaped (rectangle with semicircular ends) slot all the way through the plate, axes along the X direction. The slot has total end-to-end length 50mm and width 10mm: the centers of the two semicircular ends are at (-20, 0) and (20, 0), each of radius 5mm, joined by a 40mm-long, 10mm-wide rectangular section (x in [-20, 20], y in [-5, 5]). The slot is cut through the full plate thickness. Output a single solid.

Checks

valid_solid

pass

params + details

params: {
  "type": "valid_solid"
}

details: {
  "root_count": 1,
  "solids_produced": 1
}

bbox

pass

params + details

params: {
  "type": "bbox",
  "min": [
    -40,
    -20,
    0
  ],
  "max": [
    40,
    20,
    8
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    40,
    20,
    8
  ],
  "actual_min": [
    -40,
    -20,
    0
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 0,
  "tolerance_mm": 0.1
}

mass_props

fail

volume off by 6.0%

params + details

params: {
  "type": "mass_props",
  "volume_mm3": 21771.68,
  "tolerance_pct": 1
}

details: {
  "volume": {
    "actual_mm3": 23069.6106252829,
    "deviation_pct": 5.961554759590904,
    "pass": false,
    "spec_mm3": 21771.68,
    "tolerance_pct": 1
  }
}

hole_count

pass

params + details

params: {
  "type": "hole_count",
  "diameter_mm": 10,
  "expected": 2,
  "diameter_tolerance_mm": 0.1
}

details: {
  "actual": 2,
  "diameter_mm": 10,
  "diameter_tolerance_mm": 0.1,
  "expected": 2,
  "found": [
    [
      -20,
      0,
      10
    ],
    [
      20,
      0,
      10
    ]
  ]
}

hole_positions

pass

params + details

params: {
  "type": "hole_positions",
  "diameter_mm": 10,
  "positions": [
    [
      -20,
      0,
      0
    ],
    [
      20,
      0,
      0
    ]
  ],
  "tolerance_mm": 0.2
}

details: {
  "diameter_mm": 10,
  "per_expected": [
    {
      "distance_mm": 0,
      "matched_hole": [
        -20,
        0
      ],
      "pass": true,
      "spec_xy": [
        -20,
        0
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        20,
        0
      ],
      "pass": true,
      "spec_xy": [
        20,
        0
      ]
    }
  ],
  "tolerance_mm": 0.2,
  "unmatched_extras": []
}

step_roundtrip

pass

params + details

params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          20,
          8
        ],
        "original_min": [
          -40,
          -20,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          20,
          8
        ],
        "roundtripped_min": [
          -40,
          -20,
          0
        ],
        "tolerance_mm": 0.897997772825746
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0.0020012870227858522,
        "original_mm3": 23069.6106252829,
        "pass": true,
        "roundtripped_mm3": 23069.14893615925
      }
    }
  ],
  "tolerance_pct": 1
}

Tool calls

open_document

2ms

args

{}

create

err

6ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "difference",
  "name": "Plate with Slot",
  "params": {
    "a": {
      "type": "translate",
      "params": {
        "x": -40,
        "y": -20,
        "z": 0,
        "child": {
          "type": "cube",
          "params": {
            "x": 80,
            "y": 40,
            "z": 8
          }
        }
      }
    },
    "b": {
      "type": "union",
      "params": {
        "a": {
          "type": "translate",
          "params": {
            "x": -20,
            "y": -5,
            "z": -1,
            "child": {
              "type": "cube",
              "params": {
                "x": 40,
                "y": 10,
                "z": 10
              }
            }
          }
        },
        "b": {
          "type": "union",
          "params": {
            "a": {
              "type": "translate",
              "params": {
                "x": -20,
                "y": 0,
                "z": -1,
                "child": {
                  "type": "cylinder",
                  "params": {
                    "r": 5,
                    "h": 10
                  }
                }
              }
            },
            "b": {
              "type": "translate",
              "params": {
                "x": 20,
                "y": 0,
                "z": -1,
                "child": {
                  "type": "cylinder",
                  "params": {
                    "r": 5,
                    "h": 10
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}

create_cad_loon

13ms

args

{
  "source": "[let plate [translate -40 -20 0 [cube 80 40 8]]\n  [let slot [union [translate -20 -5 -1 [cube 40 10 10]]\n              [union [translate -20 0 -1 [cylinder 5 10]]\n                     [translate 20 0 -1 [cylinder 5 10]]]]\n    [root [difference slot plate] \"steel\"]]]",
  "format": "json"
}

create

4ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "cube",
  "name": "PlateBase",
  "params": {
    "size": {
      "x": 80,
      "y": 40,
      "z": 8
    }
  }
}

read

4ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "1"
}

delete

3ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "1"
}

create

2ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "cube",
  "name": "PlateCube",
  "params": {
    "size": {
      "x": 80,
      "y": 40,
      "z": 8
    }
  }
}

create

5ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "translate",
  "name": "PlateMoved",
  "parent_part_id": "1",
  "params": {
    "child": 1,
    "offset": {
      "x": -40,
      "y": -20,
      "z": 0
    }
  }
}

create

4ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "cube",
  "name": "SlotRectRaw",
  "params": {
    "size": {
      "x": 40,
      "y": 10,
      "z": 10
    }
  }
}

create

3ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "translate",
  "name": "SlotRect",
  "parent_part_id": "3",
  "params": {
    "child": 3,
    "offset": {
      "x": -20,
      "y": -5,
      "z": -1
    }
  }
}

create

err

6ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "cylinder",
  "name": "SlotCyl1Raw",
  "params": {
    "radius": 5,
    "height": 10
  }
}

create

3ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "cylinder",
  "name": "SlotCyl1Raw",
  "params": {
    "radius": 5,
    "height": 10,
    "segments": 64
  }
}

create

4ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "translate",
  "name": "SlotCyl1",
  "parent_part_id": "5",
  "params": {
    "child": 5,
    "offset": {
      "x": -20,
      "y": 0,
      "z": -1
    }
  }
}

create

3ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "cylinder",
  "name": "SlotCyl2Raw",
  "params": {
    "radius": 5,
    "height": 10,
    "segments": 64
  }
}

create

3ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "translate",
  "name": "SlotCyl2",
  "parent_part_id": "7",
  "params": {
    "child": 7,
    "offset": {
      "x": 20,
      "y": 0,
      "z": -1
    }
  }
}

create

3ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "union",
  "name": "SlotUnion1",
  "params": {
    "left": 4,
    "right": 6
  }
}

read

3ms

args

{
  "document_id": "doc_1781216900141_1"
}

read

3ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "9"
}

create

3ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "union",
  "name": "SlotUnion2",
  "params": {
    "left": 9,
    "right": 8
  }
}

create

2ms

args

{
  "document_id": "doc_1781216900141_1",
  "type": "difference",
  "name": "PlateWithSlot",
  "params": {
    "left": 2,
    "right": 10
  }
}

read

3ms

args

{
  "document_id": "doc_1781216900141_1"
}

get_document

2ms

args

{
  "document_id": "doc_1781216900141_1"
}

delete

4ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "1"
}

delete

1ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "2"
}

delete

1ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "3"
}

delete

1ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "4"
}

delete

2ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "5"
}

delete

1ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "6"
}

delete

1ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "7"
}

delete

1ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "8"
}

delete

0ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "9"
}

delete

0ms

args

{
  "document_id": "doc_1781216900141_1",
  "part_id": "10"
}

get_document

2ms

args

{
  "document_id": "doc_1781216900141_1"
}

render_view

110ms

args

{
  "document_id": "doc_1781216900141_1"
}

get_document

2ms

args

{
  "document_id": "doc_1781216900141_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T222819Z-90b0.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "PlateCube",
      "op": {
        "type": "Cube",
        "size": {
          "x": 80,
          "y": 40,
          "z": 8
        }
      }
    },
    "2": {
      "id": 2,
      "name": "PlateMoved",
      "op": {
        "type": "Translate",
        "child": 1,
        "offset": {
          "x": -40,
          "y": -20,
          "z": 0
        }
      }
    },
    "3": {
      "id": 3,
      "name": "SlotRectRaw",
      "op": {
        "type": "Cube",
        "size": {
          "x": 40,
          "y": 10,
          "z": 10
        }
      }
    },
    "4": {
      "id": 4,
      "name": "SlotRect",
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": {
          "x": -20,
          "y": -5,
          "z": -1
        }
      }
    },
    "5": {
      "id": 5,
      "name": "SlotCyl1Raw",
      "op": {
        "type": "Cylinder",
        "radius": 5,
        "height": 10,
        "segments": 64
      }
    },
    "6": {
      "id": 6,
      "name": "SlotCyl1",
      "op": {
        "type": "Translate",
        "child": 5,
        "offset": {
          "x": -20,
          "y": 0,
          "z": -1
        }
      }
    },
    "7": {
      "id": 7,
      "name": "SlotCyl2Raw",
      "op": {
        "type": "Cylinder",
        "radius": 5,
        "height": 10,
        "segments": 64
      }
    },
    "8": {
      "id": 8,
      "name": "SlotCyl2",
      "op": {
        "type": "Translate",
        "child": 7,
        "offset": {
          "x": 20,
          "y": 0,
          "z": -1
        }
      }
    },
    "9": {
      "id": 9,
      "name": "SlotUnion1",
      "op": {
        "type": "Union",
        "left": 4,
        "right": 6
      }
    },
    "10": {
      "id": 10,
      "name": "SlotUnion2",
      "op": {
        "type": "Union",
        "left": 9,
        "right": 8
      }
    },
    "11": {
      "id": 11,
      "name": "PlateWithSlot",
      "op": {
        "type": "Difference",
        "left": 2,
        "right": 10
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 11,
      "material": "default"
    }
  ]
}

generated 2026-06-19T01:47:56.146Z · static site, regenerate with npm run build -w @mecheval/leaderboard